Sifter



SIFTER.,

Patented May 16 N. Pnnnanuwuuwwm wnhingem. n. c.

UNITED STATES4 ATENT OFFICE.

GEORGE T. FINLEY, OF WEBSTER, PENNSYLVANIA.

SIF'VI'ER.

SPECIFICATION forming part of Letters Patent No. 257,928, dated May 16,`1882.

Application sica Aprire, ieee. (No model.)

To all whom it may concern:

Be it known that I, GEORGE T. FINLEY, a citizen of the United States 0i'America, residing at Vebster, in the county otl Westmoreland and Stateof Pennsylvania, have invented certain new and usef'ul Improvements inSifters; and I do hereby declare the following to be a full, clear, andexact description ofthe invention, such as will enable others skilled`in the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to letters or figures ofreference marked thereon, which form a part of thisspecitication.

i My invention relates to that class of sif ters which are used toseparate the tiner and coarser particles of sand, lime, cinders, andsimilar substances; and it consists in certain elements of mechanismcombined, as hereinafter described, and specifically set forth in theclaims.

Figure 1 is a perspective of a machine cmbodying my invention, and Fig.2 is a central vertical longitudinal section ot' the same.

Like letters refer to like parts in both figures;

A represents a suitable frame-work for the support of the mechanism, andit is provided with handles'B, by which it is adapted to be carried fromplace to place.

Within the front standards of thc frame is journaled acrank-shaft, C,which is connected by a pulley, c, and belt d to a driving-pulley, c,mounted on a parallel shaft, E, provided with a'crank, c', by which themachine is operated. A be1t-pulley may be mounted on the crank-shaft C,and power maybe applied thereto, if desired.

. of the frame-work.

frame G are secured` the sides ot' the chute J,

which sides are perforated at j in a manner which permits the passagetherethrough'of and oscillation of said chute about the crank-shaft C.The rear end of the ,screen'frame projects beyond the chute, as clearlyshown at g.

Within the trame G is located the screen K, having an opening, k, at itsrear end corresponding to and registering with the opening lformed byprojecting frame G beyond the chute J. The frame G and screen K areinclined to the rear and the chute is inclined to the front, as shown.

front end of the in achine, and the screen, screenfratrie, and chute aresimultaneously agitated, being directly connected to each other, byrotating the crank-shaft, as described, resulting in an oscillatory andswinging motion thereof, which is effective in separating the particlesby forcing the liner through the screen into the chute and feeding` bothalong the inclines ot' the screen and chute, delivering thetinerportions at the front, While the coarser fall to the ground, orinto asuitable receptacle at the rear ofthe machine.

If desired, gearing maybe substituted for the belt and pulleys shown,anda iy-wheel may als'o be applied to either of the shafts.

Having described my invention and its op; eration, what I claim asnew,and desire to secure by Letters Patent, is-

1. The combination of theinclined suspended screen-frame and screen withthe chute oppositely inclined and having perforated sides and secured tothe screen-frame, and means for their operation, substantially as shownand described.

GEORGE T. FINLEY.

;Witnesses:

A. A. PERKINS,

A. J. MILHOLLAN.

2. rllhe combination of crank-shaft G., rod H, i

Substances to be screened are fed into. the

